From f83144b79aadef4e02073f2c4a30d82133ce565a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Mon, 4 Nov 2013 14:09:19 +0100
Subject: [PATCH] screencast: Validate parameters of ScreencastArea

... just as we do for screenshots.

https://bugzilla.gnome.org/show_bug.cgi?id=699752
---
 js/ui/screencast.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/js/ui/screencast.js b/js/ui/screencast.js
index 85ce4d789..67a4280f6 100644
--- a/js/ui/screencast.js
+++ b/js/ui/screencast.js
@@ -135,6 +135,16 @@ const ScreencastService = new Lang.Class({
         if (!recorder.is_recording()) {
             let [x, y, width, height, fileTemplate, options] = params;
 
+            if (x < 0 || y < 0 ||
+                width <= 0 || height <= 0 ||
+                x + width > global.screen_width ||
+                y + height > global.screen_height) {
+                invocation.return_error_literal(Gio.IOErrorEnum,
+                                                Gio.IOErrorEnum.CANCELLED,
+                                                "Invalid params");
+                return;
+            }
+
             recorder.set_file_template(fileTemplate);
             recorder.set_area(x, y, width, height);
             this._applyOptionalParameters(recorder, options);